Humankind is at a turning point in our quest for extraterrestrial life-we now have the capacity to detect Earth-like planets around other stars. In The Crowded Universe, renowned astronomer Alan Boss argues that in the coming years we will find abundant Earths, including many that are indisputably alive. Life is not only possible elsewhere in the universe, he argues-it is common.

Humankind is at a turning point in our quest for extraterrestrial life-we now have the capacity to detect Earth-like planets around other stars. In The Crowded Universe, renowned astronomer Alan Boss argues that in the coming years we will find abundant Earths, including many that are indisputably alive. Life is not only possible elsewhere in the universe, he argues-it is common.